Finding the Third Proportional to 88.09 and 139.94

Step by Step Solution

1. Step 1: Write the proportion equation
   88.09 : 139.94 = 139.94 : x
2. Step 2: Convert to fraction form
   88.09/139.94 = 139.94/x
3. Step 3: Cross multiply
   88.09x = 139.94 × 139.94
4. Step 4: Simplify right side
   88.09x = 19,582.50
5. Step 5: Solve for x
   x = 19,582.50/88.09
6. Step 6: Final answer
   x = 222.29